Door-check



WU" J Paten'd Nov. 22, 1921.

A. j. EISMAN.

DOOR CHECK.

APPLICATQN FILED DEC. 4| 1919.

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7dana UNITED STATES ADAM J. EISMAN, 0F BUFFALO, NEW YORK.

DOOR-CHECK.

Specification of Letters Patent.

Patented N0v.22,1921.

Application led December 4, 1919. Serial No. 342,378.

T 0 all whom it may con Cem Be it known that I, ADAM J. EisMAN, acitizen of the United States, residing at Buffalo, in the county of Erieand State of New York, have invented certain new and useful Improvementsin Door-Checks, of which the following is a specication.

This invention relates to combined door checks and retainers, and isdesigned to eliminate the slamming of a door and also to hold the doorin open position when desired.

The object of my invention is the production of a device of thischaracter, which is simple, inexpensive, and thoroughly eficient in theperformance of its functions, and which may be either applied to a doorjamb and have pivotal connection with the door or to a door and havepivotal connection with a jamb, as may be desired.

The invention consists in the novel features of construction, and in thearrangement and combination of parts to be hereinafter described andmore particularly pointed out in the subjoined claims.

In the drawings Figure l is a side elevation of a wall showing a portionof a door opening and a door closing said opening with a portion of thedoor jamb and the door in section, and showing a longitudinal section ofmy improved door check and retainer in the manner it is applied to thejamb with a part thereof pivotally connected to the door.

Fig. 2 is a horizontal section taken through the door jamb and throughthe device applied thereto, on line 2-2, Fig. 1, the jamb being brokenaway at two points to show parts'of the door beneath.

Fig. 3 is an enlarged transverse section taken on line 3-3, Fig. 1.

Fig. 4 is a sectional perspective view of the device with parts thereofseparated but in operative relation to each other, and with a part ofthe device pivotally connected to a door. i

Referring now to the drawings in detail, the reference numeral 5designates a wall of a. building having a door opening 6 therein, a doorframe including a door jamb 7, and a door 8 hinged to one of the sidesof the door frame, as at 9.

Myimproved door check and retainer is herein shown as applied to theheader jamb of the door, and to permit of this, said j amb is formedwith a longitudinal recess or depression 10, to opposite end walls ofwhich gripping springs 11, 12 are secured, each of which has two spacedspring members 13 which gradually approach each other at one endlgandhave the ends flared outwardly, as at Arranged within the depression l0between said springs is a metallic guide 15 which snugly fits saiddepression and is fastened to the horizontal jamb 7 by screws, orotherwise. This guide is formed of a strip of sheet metal bent intosubstantially rectangular form in cross section `with a slot 16 in itsbottom wall and therefore comprises a to wall 17, side walls 18, and twoinwar l -extending or opposed flanges 19 space apart to form the slottedbottom wall. This guide is therefore hollow and open at opposite endswith the slot 16 eX- tending from end to end thereof.

Slidable within the guide 15 is a check and retainer member 20, saidmember having an intermediate portion of cross sectional shape tocorrespond to the interior of said guide so that it is in physicalcontact with all the walls of said guide.

At opposite ends, said check or retainer member 20, which may be termeda slide, is reduced in thickness and formed with a concaved portion 21and a convex portion 22 at both the top and bottom of each reducedportion with the outer ends of the slide rounded, as at 23. This slidehas pivotal connection, as at 24, with one end of a link or bar 25, theopposite end of which latter is pivotally connected to the upper edge ofthe door 8, as at 26.

lVith the door hinge at the right of an opening, the slide 20 is at theextreme left of its movement when the door is closed and the left handend ofl said slide is retained between the spring members of thegripping spring 11, which spring may be termed a check spring. When thedoor is swung open to the position indicated by dotted lines in Fig. 2,the slide will have been moved within the guide 15 to its extreme rightposition, as indicated by dotted lines in Fig. 1, with the right handend of the slide forced between the spring members of the grippingspring 12, cwhich spring 'may be termed a. retainer spring.

It is therefore apparent that upon opening the door, the slide 20 ismoved from left to right within the guide l5, and when closing the doorit is moved from right to left within said guide. When, however, a dooris hinged at the left of an opening, reverse action of the slide takesplace, assuming the door is swung to the same side of the wall, and insuch case the gripping spring 11 becomes the retainer spring while thegripping spring -12 becomes the check spring.

With the door closed, the link or bar is positioned directly underneaththe guide, as best shown in Fig. 3, and one edge thereof lies againstone of two depending lips` 27 arranged on one of the flanges 19 formingthe slotted bottom wall of the guide, each of said lips being formed bycutting incisions in the flange and bendingV the metal between saidincisions downwardly, as best shown in Fig. fl. Therefore, with myinvention it will be found unnecessary to `employ the usual door stopsexcept of course on exterior doors .where door stops .are alwags needed.

uring the act of opening the door, the slide is moved within its guidetoward the hinged edge of the door and nally 4has vthat end of the slideclose to the hinged edge of the door engaged by the spring members Vofthe retainer spring 12, whichspring members are forced apart'until theconvex portions of said slide end pass beyond the eX tremities of thespring, as shown by dotted lines in Fig. 1. Vhen the slide is in thisposition the door is opened to its limit and will be retained in thisposition so that air `drafts passing through a room cannot close thedoor, and it is necessary to exert sufficient pressure on the door inthe direction of its closing movement to disengage the slide from theretainer spring before the door canbe closed. When the, door reachestheend ofts closing movement,-the opposite end of the `slide engages thecheck spring 11, causing the spring members thereof to separate untilthe convex portionsV of said slide end pass the extremities of saidspring members. The spring members of the check spring therefore preventslamming of the door and necessitate'the use of some pressure. orrequire momentum in the movement of the door in order to completelyclose the latter.

It is apparent that either o f the springs may be dispensed with and oneend'of the slide only be formed as shown; in which case, if the retainerspring only is used the device will serve as a door retainer only,

while if the check spring only is used, the device will serve as a doorcheck only to prevent slamming of the door when closed by air drafts.

It is also apparent that the slide and its coperating parts may befitted into' the upper edge of the door, with the link or bar 25pivotally. connected to the door jamb. In the event of this device beingused on a double door; that is7` oneswinging to 4ophinged to positesidesv of the wall, the stop lips 27 on the guide 15 may be dispensedwith. It is also to be noted, viewing the wall as shown in Fig. 1, thatif vthe door were hinged uat the left hand end, it would be necessary tochange the pivotal point 26 of the bar or link 25, and if the door wereto be swung to the Vopposite side of the wall and the stop lips were tobe utilized in conjunction with the bar or link 25, it would benecessary to reverse the guide in orderto bring the stop lips to theopposite side of the slot 16 within said guide.- l

Having thus described my invention, what I claim is ,Y

1. The combination with a wall having a door opening provided with alongitudt nal depression in the header jamb thereof,

' and a door for closing said opening, of gripping springs at oppositeends of saidV de'- pression, a slide movable within said depressionbetween said gripping springs, and a link pivotally connected at one endto said slide and at its other end to the upper edge of said door.

2. The, combination with a wall having a door opening provided with alongitudinal depression in the header jamb thereof, and a door for saidopening, of gripping springs at opposite ends of said depression, aslide member movable y between said gripping springs and adapted toengage said springs as the door approaches the ends of its movements inopposite directions, and a link pivotally connecting said door with saidslide to cause movement of the latter when moving the door.

3.' The combination with a wall having a door opening provided with alongitudinal depression in the header j amb thereof, and a door for saidopening, of springs at opposite ends of said depression, a slidablemember within said depression adapted to have each end thereof engageone ofsaid springs, Y

and connection between said slide and said door to causesaid slidevtomove toward or from either of said springs. Y, 4. The combination with awall having a door opening provided with a longitudinal depression inits headerjamb, and adoor hinged to said opening, of a spring lat oneend of said depression, a slidable member within said depression adaptedto engage said spring, and a link having opposite ends pivotallyconnected to said slide and door, respectively.

5. The combination with wall having aV provided witha longitudinal dooropening depression in its header jamb, and a -door said wall to open orclose said door opening, of a hollow elongated guide fitted insaiddepression, a slide movable in said guide, means in said depression toengage one end of said slide and retain said slide when the door is infull openposition, and

a link pivotally connected at one end to said slide and having pivotalconnection at its other end with said door.

6. The combination with a wall having a door opening provided with adepression in its header j amb, and a door for said opening, of a fruidefitted in said depression, a slide mova le in said guide, yielding meansat one end of said depression adapted to be engaged by one end of saidslide when closing the door to preventslamming thereof, and means forpivotally connecting said slide with said door to cause movement of saidslide when moving said door.

7. The combination with a wall member' and a door member hinged to saidwall member, one of said members having a depression therein, of a slidereciprocable within said depression, a link having one end thereofpivotally connected to said slide and having pivotal connection at itsother end with said other member, and a spring at one end of saiddepression adapted to be engaged by said slide to check the closingmovement of the door and prevent slamming thereof.

8. The combination with a wall member and a door member hinged to saidwall member, one of said members having a depression therein, of a slidereciprocable within said depression, a link having one end thereofpivotally connected to said slide and having pivotal connection at itsother end with said other member, and a spring at one end of saiddepression adapted to be engaged by said slide to retain the door infull open position.

' 9. The combination with a wall member and a door member hinged to saidwall member, one of said members having a longitudinal depressiontherein, of a slide reciprocable within said depression, a link havingone end thereof pivotallyv connected to said/slide and having pivotalconnect-ion at its other end with said other member, and springs atopposite ends of said depression adapted to be engaged respectively byopposite ends of said slide when opening said door member to its fullextent and when closing said door member.

l0. The combination with a wall member having a door opening, and a doormember hinged to said wall member for closing said door opening, one ofsaid members having a longitudinal depression therein, of a hollow guidefitting within said depression and having opposite ends open and a slotin one of its walls extending from end to end thereof, a slide fittingwithin said guide and having reduced ends provided with concave andconvex surface portions, a gripping spring at each end of saiddepression adapted for engagement with the concave and convex surfaceportions at corresponding ends 4of said slide, and a link pivotallyconnected at one end to one of said members and having pivotalconnection at its opposite end to said slide, the pivot at said oppositeend extending through the slot of said guide.

11. The combination with a wall member having a door opening, and a doormember hinged to said wall member and adapted to close said dooropening, one of said meinbers having a longitudinal depression therein,of a hollow guide itted in said depression and terminating short of theends thereof, said guide having a longitudinal slot through one of itswalls and a stop lip extending from said wall, gripping springs atopposite ends of said depression, a slide reciprocable within said guideand having opposite ends shaped to conform to said gripping springs tobe gripped thereby, and a link pivotally connected at one end to one ofsaid members and having its other end pivotally connected to said slide,the pivot at said other end passing through the slot of said guide.

l2'. The combination with a wall member having a door opening and a doorhinged to said wall member adapted to close said opening, of areciprocable element on one of said members having one end provided atopposite sides with concave and convex surface portions, a iinkpivotally connected at one end to the other member and having its otherend pivotally connected to said recipiocable element, and a springhaving two spaced spring members gradually approaching each other at oneend and adapted to receive the cancave and convex surface portions ofsaid reciprocable member.

In testimony whereof I afiix my signature.

ADAM J. EISMAN.

